Universal joint



1927- s. B. KINSLER UNIVERSAL JOINT Filed May 6, 1926 2 Sheets-Sheet 1 177 v5 /7 for:

Patented Aug. 9, 1927.

ITE-2nxINsn-Em on-naniroan, Q KECTEU S ilQR '0? QNE*THIR1$ To ARTHUR J. nnonnunon wns'rn-anmnonn, commogricur.

'U vmsn Joint.

Application-filed MayQG, 1926. serm N'o. 10?;091;

v invention relates" to improvements in univei's'al 'jbi n'ts of the usualfi orm'ast'o the general operative features I and the obj ect' of my improvement is to produce a universal joint in which the bearing pins are r,en1ova-' bly secured, in position in a centralhousnig' orib'ody;,the pins alongone axis beinginade of separate or individual parts that'engage by their inner ends witlijthe intermediate pin structure-7;. the opposed parts having'inter en aging'"locking merribers', and; in which a longi'tudinall'y disposed pin serves; as means for: holding said lockingmembersin the inter-engaged position.

In. the: accompanying drawing i Figurelis aside elevation ofa universal j-ointembodying thy-invention, parts of the two yoke structures'being also shown,

Figure 2 is an endfface view'ofthe hearing pin member shown in Fig 1.

Figure 37 is a plan'view of the same, showing; the wrench receiying socketin one end ofi't-he long bearing pin member;

Figure l is a sectional View on the line if-40f Fig, 2 and onan enlarged scale,

Eigureeis a side"e1evation "o;f the long bearin'gpin member. 1

Figure 6 is. an end elevation of onejof the shQ-rtbearing pin members.

' Eigure 7 is ahsectional' 'viewi correspondm to Fig; 4 showing a, modified form of structure. Y

F ignre 8v is. a side/elevation of; the long bearing pin inember-shownhingFig} 7;.

' Figure? is an'fendview of one of the short pins;

Figure '10: is. a side View of the same.

improved universal] j pint comprises; a central housing or body 1 0from whichproject ingsubstantially the usualfmanner a set p v theinid'dl'e by an open ng 29 that 1s 1n reg- "istrat on with the longitudinal bores 25 in ofbea-ring'pins that are arranged in pairs along commona-Xes, all ofthe axes being in acommon plane and the axis ofione pair being at. right angles tothe axis: of the other pair, said pins 11 being individually in the form of vshortstub-shafts The body 1 0 has a setojf. radialfaces 12 from Y which the pins- 11* project outwardly and against. which are seated the bearing bushings 13that serve as thebearingspnop er in cooperation with the bearing pins 11.

s shown, the innerend portion 14 of the bearing bushings; 13, are, in i the for'mj of flanged, structures; that are, interposed between; the taces. I2f1nentioried and the opposed faces ofthe armsla of the yoke 16; Thus the structures of the yokes 16- serve to hold the bearing-bushings in place;

The sleeve-like "body. portion 17 of the bearin-gbushing 18 m each case fits over the bearing pin 11 and: is received within the opening 18 in the yoke arm l5-,beingentered intoposit-ion from the inner space 19, between-the arms 15, before the bearingpins are" assenibled with the body 10.

So fares th'eoperative features are-concerned under conditions of use the four'bear ing' 'pins 11', maybe substantially alike-and the structures oi? the arms 1 5 of the two yohes 16 are alike. As to other details of th e yokes; 16, as shown in Fig.1, one may terminate in the form of a tubular extension 20 for connection with a rod or the like, at the right in said figure51andthe other may merge with a flange structure for connection' with a companion flange.

An exterior view ofthe assembled body 10 and bearing pins 11 showsat'the ends of one pair of pins 11 the endsoffa locking pin 21. Also; there may be one ormorecotter-pins 'EZZJt-hat loclr'the locking" pin 21 in} place agaihst'longitudinal displacement; r

The beariiig pinsll nientioned. in which are disclbs'ed the ends of-itlie lockingrod' 21 are'ea'c'lra part'of" a short pin meinber 23 and whichextend inwardly along suitable bores 24 0f the body 10 and that at their inner ends" interlock" with the interposed midd1 portionQG of,'the'lo11g pinJ member 27. Said jlfong pin member 2.7 extends through a iborej'28 in'the'- body-'10 inthe form of'a singl piece or shaft that terminates by its ends to"proyi'clejtlre pair ;obearing pins 11 that are indiv dually solidi The lon'gfpii-meniber; 27 is perforated at the short pin members 23' and through which the lbcking pin 21 passes whenvin thelocking position.

The longpin member 27 is provided with means lfordorce'fu'l rotation and to this end may have at one endg'asshown a hexagonalwalled socket 3 0 for receiving" a, suitable wrench. Y

The 'int'er engaging' ineans for the pin members comprisesthe tollowing Q11,the opposite sides ofthe middle portioirQfi' of the long pin DIQInbQLQT is. a recess or socketk l' that is borderedjon th'eoutsi'de In disengaging the parts the cotter-pins 22 are removed, the locking pin 21 is slipped out of the way, and finally the actual disengagement is effected by turning the long pin member 27, as by means of a wrench applied to the socket 30, the parts being constructed and arranged to respond to such manipulation.

to details, back of the tooth 33 on the end of the short pin member 23 15 a cut-away portion or recess ihe rear wall of this last named recess 3st is opposed to and m fits against the periphery 36 of the middle portion 26 of the long pin member 27 and the one is seated against the other as closely contacting members, the opposed faces being of cylindrical form.

The cylindrical rear wall 35 terminates at the inner end back of the tooth 33 and at a point 37 slightly beyond the axis. Elie portion of the recess 34ioutward from the point 37 and which is the portion that is immediately inward from the tooth 33 is shapec precisely to fit the tooth 32 and to this end, as shown, comprises a short longitudinally directed wall or face 38 that corresponds to the flat top face of the tooth 32. A second longitudinally directed wall or face 39 defines the flat top face of the tooth 33. An inclined wall or face to connects the longitudinally directed faces 38 and 39 and defines the engaging faces of the teeth 32 and 33.

The end face 41 of the tooth 33, which corresponds to the inner end face of the short pin member 23, is flat and radial.

As described, the details of the teeth and recesses are such that the teeth fit closely one against the other and the teeth substantially fill the portions of the cut-away portions or recesses in which they are housed.

That is to say, at each joint or junction there are cooperating holding parts on the two members and which may be designated for each member as a projection, ridge, or tooth and back of each holding part is a cutaway or reduced part which may be clescribed as being provided in the form of a recess or socket. The holding part of one member will be housed in the socket back of the holding part of the mating member, as is well understood in situations involving the inter-engagement of teeth or the like. It will be noted, however, in the present instance, as shown, that in each case the holding part on one member fits within and substantially fills thesocket in which it is entered. To this end, also as shown, the

boundary or border walls of the one correspond to those of the other.

in the modification shown in Figs. 7, 8, and 9 the long pin member 27 and thetwo short pin members 23* are connected by The grooves 51 define what in cross-sec 3..

tion appears to be a fan-shaped head 53, as is common in dove-tail connections generally, and the lugs 52 are separated by a receiving space or socket 5% that fits said head The parts are locked in position by means of the locking pin 21 that extends longitudinally along the short pin members 23 and directly through the middle of the long pin member 27, substantially as described in regard to the form that is shown in Figs. 1 to 6 inclusive.

l he teeth or lugs 52 are admitted to the engaging position, back of the opposed cooperating overhanging portions of the fan-shaped head 53 by a lateral movement from an entrance portion 56 and in which the overhanging portions 55 are omitted.

The entrance portion 56 comprises a pair of spaced recesses 57 that are virtually ex 37 tensions of the grooves or ways 51 and they are separated in pairs by the intermediate ridge 58. Said ridge 58 merges with the head 53. i

In both forms of structure the members are locked in position by'means of a locking pin.

It will be particularly noted that in the structure described that in the assembled position the short pins are engaged with the middle portion of the long pin in a manner for preventing longitudinal separation. That is to say, to prevent pulling the short pins away from the long pin. Also, that this result is attained by reason of the interengaging teeth or lugs and that the function of the locking pin is merely to hold these teeth or lugs in the inter-engaged position. As the pins are separated by a forceful rotation of the long bearing pin, the locking pin merely operates to prevent such rotation. It is for this reason that a cotter-pin, as shown and described, suffices to hold the locking pin in the locking position.

I claim as my invention p 1. In a universal joint structure, a body having intersecting bores, bearing pin structures housed in said bores and projecting by their ends from said body, said pin strudtures comprising one long pin extending across the intersection of said bores and a pair of short pins that are opposed by their inner ends to said long pin, said inner ends and long pin being provided with interlocking means for preventing disconnection in the form of inter-engaging teeth, and means for locking said pins in the engaged position. I

2. In a universal joint structure as described in claim 1, said last named means comprising a pin that est-ends longitudinally along said short pins and across said long pin.

3. In a universal joint, a body having in tersecting bores, bearing pins housed in said bores and comprising a long pin in one bore and extending across the other bore and a pair of short pins housed individually in the other bore and with the ends opposed to said long pin, said ends being individually notched at one side to provide a tooth at the extreme end, and said long pin being recessed at the sides for receiving said teeth.

a. In a universal joint structure as described in claim 1, a locking pin serving as means for locking said pins in the engaged position, and a cotter-pin serving as means for holding said locking pin in the locking position.

5. In a universal joint as described in claim 3, the parts being constructed and arranged so that the engagement of the short pins With the long pin is effected by a rotative movement of the long pin.

6. In a jointfor connecting the side of one pin with the end of another pin, said side'being recessed to provide a tooth-like ridge, said end being recessed adjacent the extreme end to provide a tooth at said eX- treme end, and said tooth in the connecting position fitting in and substantially filling the recess adjacent said tooth-like ridge.

7. In a universal joint structure, a body having intersecting bores and a set of pins housed in said bores and comprising a long pin and a pair of short pins that are 01 posed individually by one end to the side out said long pin, said pins having tooth-like interlocking means for preventing disconnection, a rod-like structure, housed in bores in said pins, serving as means holding said pins in such interlocked position, and a cotter-pin serving as means for retaining said rod-like structure in such holding position.

8. In a universal joint, a body having intersecting bores, a set of pins housed in said bores and comprising a long pin and a pair of short pins that are opposed individually by one end to the side of said long pin, said pins having tooth-like interlocking means for preventing disconnection, and the parts being constructed and arranged so that the engagement and disengagement of said pins is effected by a rotative movement of the long pm.

GEORGE B. KINSLER. 

